Ответ верный можете проверить на компьютере
<span><em>X+x+8+x-4=82</em>
</span><span><em>3x=82-8+4</em>
</span><span><em>3x=78</em>
</span><span><em>X=78:3</em>
</span>
<span><em>X=26</em>
</span><span><em>AB=26, BC=26+8=34, ac=26-4=22</em></span>
N-45-37=<span>n-82
</span>35-t-18=17<span>-t</span>